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Mineralen K - O
Collecties: Jacques Feijen - Frans den Held - Henk Hoenderboom - Diederik Hoof - Jürgen Ingendahl - Jan Langendoen - Felix Maassen - Hans-Peter Maassen - Kees Mak - Eric Nieuwenhuis - Bert Schijf - Henk Smeets - Bert Timmerman
Foto's: Jacques Feijen - Henk Hoenderboom - Erik Hos - Jürgen Ingendahl - Matthias Reinhardt - Bert Schijf - Henk Smeets - Bert Timmerman
Kintoreite
Langite
Laubmannite
Lavendulane
Lepidocrocite
Limonite
Linarite
Luzonite-Famatinite
Magnesite
Magnetite
Malachite
Manganese oxide
Marcasite
Matildite
Melanterite
Metatorbernite
Mimetite
Mimetite-Pyromorphite
Monazite-(Ce)
Mottramite
Muscovite
Namibite
Native copper
Native silver
Natrozippeite
Olivenite